#0 HPHP::BigHeap::freeBig (this=0x7fde75bfbfc8, ptr=0x7fdc9853ce90) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/memory-manager.cpp:1240
#1 0x00007fdf363e00ad in ?? () from /usr/lib/x86_64-linux-gnu/hhvm/extensions/20150212/luasandbox.so
#2 0x00007fdf361b6fde in luaM_realloc_ (L=L@entry=0x7fdd82612e90, block=<optimized out>, osize=320, nsize=nsize@entry=0) at lmem.c:79
#3 0x00007fdf361bb388 in luaH_free (L=L@entry=0x7fdd82612e90, t=t@entry=0x7fdca04bae70) at ltable.c:376
#4 0x00007fdf361b4b55 in freeobj (o=0x7fdca04bae70, L=0x7fdd82612e90) at lgc.c:383
#5 sweeplist (L=L@entry=0x7fdd82612e90, p=p@entry=0x7fdd82612f70, count=18446744073709463959, count@entry=18446744073709551613) at lgc.c:424
#6 0x00007fdf361b5911 in luaC_freeall (L=L@entry=0x7fdd82612e90) at lgc.c:487
#7 0x00007fdf361ba61e in close_state (L=0x7fdd82612e90) at lstate.c:108
#8 0x00007fdf363e6c18 in ?? () from /usr/lib/x86_64-linux-gnu/hhvm/extensions/20150212/luasandbox.so
#9 0x0000000001d37681 in HPHP::ZendObjectStore::freeObject (this=0x7fde394e45b0, handle=101)
at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/ext_zend_compat/hhvm/zend-object-store.cpp:76
#10 0x00000000012df5d1 in HPHP::Native::nativeDataInstanceDtor (obj=0x7fdd0eb7a860, cls=<optimized out>)
at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/vm/native-data.cpp:138
#11 0x0000000001d099e2 in tvDecRefHelper (datum=<optimized out>, type=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:175
#12 tvDecRef (tv=<optimized out>, tv=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:206
#13 tvRefcountedDecRef (tv=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:212
#14 ~Variant (this=0x7fdccc5e5188, __in_chrg=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/type-variant.h:335
#15 ~RefData (this=0x7fdccc5e5180, __in_chrg=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/type-variant.h:1509
#16 release (this=0x7fdccc5e5180) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/ref-data.h:100
#17 decRefAndRelease (this=0x7fdccc5e5180) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/ref-data.h:108
#18 decRefRef (ref=0x7fdccc5e5180) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/ref-data.h:269
#19 _zval_ptr_dtor (zval_ptr=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/ext_zend_compat/php-src/Zend/zend_variables.cpp:55
#20 0x00007fdf363e58af in ?? () from /usr/lib/x86_64-linux-gnu/hhvm/extensions/20150212/luasandbox.so
#21 0x0000000001d37681 in HPHP::ZendObjectStore::freeObject (this=0x7fde394e45b0, handle=67)
at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/ext_zend_compat/hhvm/zend-object-store.cpp:76
#22 0x00000000012df5d1 in HPHP::Native::nativeDataInstanceDtor (obj=0x7fddad0729e0, cls=<optimized out>)
at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/vm/native-data.cpp:138
#23 0x0000000002129e88 in tvDecRefHelper (datum=<optimized out>, type=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:175
#24 tvDecRef (tv=<optimized out>, tv=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:206
#25 tvRefcountedDecRef (tv=0x7fde20e76648) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:212
#26 HPHP::ObjectData::releaseNoObjDestructCheck (this=0x7fde20e76600) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/object-data.cpp:171
#27 0x000000000212945a in tvDecRefHelper (datum=<optimized out>, type=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:175
#28 tvDecRef (tv=<optimized out>, tv=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:206
#29 tvRefcountedDecRef (tv=0x7fdd86187628) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:212
#30 HPHP::MixedArray::Release (in=0x7fdd86186a00) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/mixed-array.cpp:489
#31 0x0000000002130882 in tvDecRefHelper (datum=<optimized out>, type=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:175
#32 tvRefcountedDecRefHelper (datum=<optimized out>, type=<optimized out>) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:182
#33 tvSet (inTo=..., fr=...) at /tmp/buildd/hhvm-3.18.2+dfsg/hphp/runtime/base/tv-helpers.h:393